A few of the fantastic woman flyers of the early 20th century. (For some of those I've missed, the Smithsonian Air and Space Museum has a great online exhibit).
From various institutions, but especially the San Diego Air and Space Museum.
Lores Bonney, c. 1933. Source
Adele Mullin and a fellow pilot, c. 1939. Source
Harriet Quimby and Matilde Moisant, the first two American women to earn pilot's licenses, c. 1910s. Source
Ruth Elder, 1920s. Source
Willa Brown, first African American woman to earn a pilot's license and trainer of pilots in WW2. Source
Ruth Alexander. Source
Katherine Stinson, first female pilot to execute a loop and first woman liscensed to carry US mail, 1910s. Source
Ruth Alexander being silly with a friend. Source
Jean Batten (and her kitten!) being interviewed after flying from Britain to Australia, 1934. Source
Fran Bera. Source
Katherine Stinson. Source
Nancy Bird, c. 1939. Source